Hi guitar1916,

Joe is correct. With practice, you will improve your flexibility. It takes a lot of time but it will happen!

Here is another lesson to helps with finger dexterity, check it out: https://www.guitartricks.com/lesson.php?input=12648&s_id=659

And for more info on how to toughen your fingers in general, check out this lesson: https://www.guitartricks.com/lesson.php?input=28617

I hope that helps!